But Ammiano said foster care providers already undergo some training and that the additional requirements would assist them in more effectively helping young people.

"It is crucial that foster homes are supportive places for youth to grow and learn safely, but LGBT youth are disproportionately targeted for harassment and discrimination in the foster care system," Ammiano said after he introduced AB 1856.

The bill was also backed by Clarissa Filgioun of the group Equality California, who said it will "help to provide comfort, safety and support to LGBT foster youth."